Powertrain, generic (extended)

P2CC0 PCV Heater B Performance

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

P2CC0 covers PCV heater B when its wiring passes the electrical tests but the heater does not behave as expected: current outside the plausible window, an overheated output stage, or no sign of the commanded warming. It complements the circuit codes P2CBD to P2CBF, which only detect opens and shorts. No manufacturer documents P2CC0 publicly, and the A-side code P053D is not published either; GM Europe files the closest function, an over-temperature of the heater output stage while switched on, under P052E as a Type A fault on the Saab 9-5 2.0 diesel. An FCA patent explains why the heaters matter: frozen blow-by in the make-up air line can block flow and harm the compressor wheel. Aging elements or high-resistance contacts are typical.

Likely causes

Heating element B with drifted resistance
High-resistance contact in connector or supply
Output stage overheating in the engine control module

Symptoms

  • Code stored, MIL depending on manufacturer
  • Possible icing of the ventilation line in frost

Repair estimate

DifficultyMediumDIY possible
Parts and labour€30–250
Time0.5–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

pcv heater bwiring harnessecm

Related codes

P2CBDP2CBEP2CBFP053DP052E

References: saabwisonline.com, patents.google.com, law.cornell.edu.